Em Sat, 4 Aug 2018 14:44:59 +0200
Hans Verkuil <hverk...@xs4all.nl> escreveu:
> From: Hans Verkuil <hans.verk...@cisco.com>
>
> Add a simple helper function that tests if the driver supports
> the request API.
>
> Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+sams...@kernel.org>
> ---
> include/media/v4l2-device.h | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h
> index b330e4a08a6b..ac7677a183ff 100644
> --- a/include/media/v4l2-device.h
> +++ b/include/media/v4l2-device.h
> @@ -211,6 +211,17 @@ static inline void v4l2_subdev_notify(struct v4l2_subdev
> *sd,
> sd->v4l2_dev->notify(sd, notification, arg);
> }
>
> +/**
> + * v4l2_device_supports_requests - Test if requests are supported.
> + *
> + * @v4l2_dev: pointer to struct v4l2_device
> + */
> +static inline bool v4l2_device_supports_requests(struct v4l2_device
> *v4l2_dev)
> +{
> + return v4l2_dev->mdev && v4l2_dev->mdev->ops &&
> + v4l2_dev->mdev->ops->req_queue;
> +}
> +
> /* Helper macros to iterate over all subdevs. */
>
> /**
Thanks,
Mauro
